<template>
  <h1>app</h1> 
  <Hello :msg="123" @keke="fn">
    <fieldset class="sl">
      <legend>插槽</legend>
      <b>插槽呀</b>
    </fieldset>
  </Hello>
</template>
<script>
import Hello from "./components/HelloWorld.vue"

export default {
  methods: {
    fn(input) {
      console.log(input)
    }
  },
  components: {
    Hello
  },
  setup(props,context){
    console.log(props)
    console.log(context)
  }
}
</script>
<style scoped>
:deep(.aa b) {
  color: hotpink;
}
</style>